PX-series digital temperature controller Example of ... · PX-series digital temperature controller Example of Applications and Parameter Functions. Front panel dimensions Input signal

ECNO:1158a

PX-series digital temperature controller

Example of Applications and Parameter Functions

Front panel dimensions

Input signal

Output signal

Control method

Function

Communication

96 × 96mm

48 × 96mm

48 × 48mm

24 × 48mm

Measurement input

Remote input

Heater current detection input

Valve opening input

Digital input

Control output

Transfer output

Alarm/event output

ON-OFF control

PID control

Remote control

Control output tracking (EX-MV)

Motor-operated valve control

Heating/cooling control

Auto tuning PID

Fuzzy control

Self tuning

Ramp soak function

Number of PID combinations

SV switching

Manual operation

Key for user assignment

RS485 (MODBUS)

T-LINK

8 points

8 points

3 keys

(500Kbps)

(Note 1)

(Universal) (Universal)

16 steps

8 points

8 points

1 key

72 × 72mm

8 steps (Option)

Up to 4 points (Option)

Type PXH PXG PXR

Relay contact outputSSR/SSC drive outputCurrent outputMotor-operated valve operation output

Relay contact outputSSR/SSC drive outputVoltage outputCurrent output (Note 3)Motor-operated valve operation output (Note 4)

Relay contact outputSSR/SSC drive outputCurrent output (Note 3)

4-20mA DC: 2 points(With transmitter power supply: 1 point)

4-20mA DC or 0-10V DC: 1 pointSelection not allowed for motor-operated valve output and dual output.

Optionaldevice(Note 2)

Optionaldevice

4-20mA DC: 1 point(Selection not allowed for dual output.)

Up to 9 points Up to 5 points (PXG5/9)Up to 3 points (PXG4) (Note 5)

Up to 3 points (PXR5/9)Up to 3 points (PXR4/7) (Note 6)

Up to 9 points Up to 5 points (PXG5/9)Up to 3 points (PXG4)

Up to 2 points

Number of displayed digits

Input accuracy

Calculation intervals

5 digits

0.1%

50mS

4 digits

0.3%

200mS (Note 7)

4 digits

0.5%

500mS

Note 1: Options that can be selected for the panel size 48 × 48mm are limited compared to the panels of other dimensions.Note 2: The valve opening input can be selected only when motor-operated valve operation output is selected as the control output. The heater current

detection input can be selected when relay contact output or SSR/SSC drive output is selected as the control output. "Without DO" cannot be selected. The maximum number of digital input points varies depending on the combination with other optional functions.

Note 3: If current output is selected, heater current detection input or transfer output cannot be selected.Note 4: If motor-operated valve operation output is selected, heater current detection input cannot be selected.Note 5: Up to 2 points for the type with heating/cooling control, motor-operated valve operation output (PXG), heater break alarm function, or transfer output

function.Note 6: Up to 2 points for the type with heating/cooling control, heater break alarm function, or transfer output function. The ambient temperature should be

40°C or lower.Note 7: Position feedback type: 300ms.

(19.2Kbps)(38.4Kbps) (9.6Kbps)

(Select either one.)

(PXG5/9 only)

Digital Controller Function List

Introduction

This document provides examples of applications and major functions of three types of digital controllers (types PXH,

PXG and PXR).

Contents

I. Example of Applications ....................................................................................................... 11. Controlling both heating and cooling with a single controller ........................................................ 12. Collectively displaying information accumulated in multiple controllers using communication function... 13. Preventing workers at site from changing the settings carelessly ................................................. 24. Recording the temperature data obtained ..................................................................................... 25. Preventing measurement fluctuations ........................................................................................... 36. Ratio control .................................................................................................................................. 37. Equalizing the temperature within a furnace ................................................................................. 48. Controlling temperature patterns ................................................................................................... 49. Energy-saving operation on standby ............................................................................................. 510. Control loop error detection ........................................................................................................... 511. Drying control of washers .............................................................................................................. 612. Controlling 90% of the setting at constant control output .............................................................. 613. Performing control by selecting input signals ................................................................................ 714. Controlling the flow rate of dry gas ................................................................................................ 715. Stopping the output of temperature regulator (Standby setting) ................................................... 816. Switching frequently-used parameters at the touch of a key ......................................................... 817. Operating the setting of a temperature regulator on your PC (PC loader software) ..................... 918. Performing backup control of host control system ........................................................................ 919. Decreasing control output at the start of temperature control ..................................................... 1020. Using sensor signals as communication converters ................................................................... 1021. Using a temperature controller as an operating device ............................................................... 11

II. Parameter Functions ............................................................................................................ 121. Alarm ........................................................................................................................................... 122. Alarm hold ................................................................................................................................... 123. Alarm latch .................................................................................................................................. 134. Two-position control (ON-OFF control) ........................................................................................ 135. PID, fuzzy control ........................................................................................................................ 146. Auto tuning and self tuning .......................................................................................................... 147. Switching PID .............................................................................................................................. 158. MV limit ....................................................................................................................................... 159. SV limiter ..................................................................................................................................... 1610. Parameter mask .......................................................................................................................... 1611. Guarantee soak ........................................................................................................................... 1712. Motor-operated valve control ....................................................................................................... 1713. Control operation and burnout direction ...................................................................................... 1814. User adjustment and PV shift ...................................................................................................... 1815. PID tuning status check (loader) ................................................................................................. 1916. Universal input ............................................................................................................................. 1917. Switching between forward and reverse operations .................................................................... 20

•••••••••••••••••••• Related documents ••••••••••••••••••••

Brochure for PX-series digital temperature controller: ECNO, 1125

Brochure for digital controller (Type PXH): ECNO, 1152

Brochure for digital temperature controller (Type PXG): ECNO, 1157

Operation manual (Type PXR): ECNO, 406

Operation manual (Type PXG): ECNO, 1411

FLOW CHART OF FUJI TEMPERATURE CONTROLLER

PXR4 PXR3PXR9 PXR5 PXR7

PXH9 PXG4PXG5PXG9

PXH9 PXG4PXG5PXG9

PXR3

PXH9 PXG4PXG5PXG9

PXH9 PXG4PXG5PXG9

PXH9

PXH9 PXG9

PXH9

PXG4PXG5PXG9

PXR4 PXR3PXR9 PXR5 PXR7

Ramp soak controlYES

NO

Heating & cooling control

NO

Transmitter power supply

NO

Limited panel space

NO

Universal processvalue input

NO

NO

Valve control- Servo- Position feedback

Modbus communication- RS485

NO

Mathematical moduleflow compensation average, high/low selectorinput selector

YES

YES

YES

YES

YES

YES

YES

: 32 segments/program

: Process controllers with position proportional

: Thermocouple, RTD,DC voltage and current

Useful for various applications involving processmanipulation etc through the numeric operation between 2 or 2 inputs

: 24V DC (DC19.5 -24V)

: 16 segments/program

: Independent PID

: Relative cool gain

Front size : 24 × 48mmPanel depth : 97mm

1

• Only one controller is required to keep the temperature of a cattle

shed constant all year round, by cooling down the hot summer

heat with a fan and warming up the cold winter air with a heater.

Controlling both heating and cooling with a single controller1

PXHPXGParameter setting by typeDescriptionParameter

PXRSpecifies the type of dual control (control outputs 1 and 2).

M

APR

Temperature input signal

Motor of cooling fan

Inverter

Cattle shed

Current output

Current output

Heater power supply

To heater

in shed

Room temperature

• By connecting a controller, recorder,

and inverter using the communication

function, you can display information

collectively on an indicator or a PC.

Settings can also be changed through

communication.

Collectively displaying information accumulated in multiple con-

trollers using communication function

2


PXRSelects the type of communication function (if provided).

RS485

RS232C

PXR4PXR3 PXR9 Recorder PHF InverterPXR5PXR7

Computer Programmable operation display

Fuji's UG series

Signal converter

I. Example of Applications

ECNO1158.p65 11.3.16, 14:01Page 1 Adobe PageMaker 6.5J/PPC

2

• Carelessly touching a button on the front face of the temperature

controller may change the settings, thus disabling proper control.

• The key lock function and password function can be used to pre-

vent such operating errors.

• Key lock: Prohibits the setting of all the parameters.

<LOC> : Prohibits the setting of parameters except for SV.

• Password: Use the password function to prohibit parameter set-

ting. There are three levels of prohibition.

Preventing workers at site from changing the settings carelessly3


PXRLOC

Specifies whether the parameter settings are allowed to be changed or not.

PXG9

PXG9

????

????????

• The temperature of oil in the fryer can be captured into the re-

corder and the data recorded.

Recording the temperature data obtained4


PXRAO-T Sets the type of transfer output.

PV transfer output

4 to 20mA DC

Heater

Current control signal

AC power regulator (APR)

Controller

Recorder PHR

Temperature input

Fryer

Oil


3

• Sudden changes in incoming signals to a level gauge

of a water tank can be smoothed.

• The water feed valve can be controlled automatically

according to the water level in the tank measured with

a level gauge.

• The filter function reduces measurement fluctuations

caused by waves on the water surface.

• The flow rate of chlorine fed to tap water can be controlled at a

constant level.

Ratio control6

Preventing measurement fluctuations5


PXRP-DF

Note: Select PXH for controlling high flow rate and pressure.

Sets the constant of the input filter.


PXRCALC Selects an operational expression.

Water distribution

Water tank Water feed

Level signal

Level gauge

Controller

M

Flow rate signal 2 Flow rate signal 1 Ratio

Flow rate 2

Flow rate 1 (SV)

Tap water

Chlorine

Valve

Controller


4

• The setting of controller No.1 is treated as the input setting of

other controllers to equalize the temperature within a tunnel fur-

nace.

• The setting (SV) can be changed with time according to the pro-

gram pattern selected beforehand.

Ramp soak of up to 8 steps can be programmed with type PXR,

and up to 16 steps with type PXG.

Controlling temperature patterns8

Equalizing the temperature within a furnace7




PXRPT-N Sets the ramp soak function.

Transfer output (SV)

Tunnel furnace

Controller No.1 No.2 No.3

SSR SSR SSR

Temperature input

Furnace

ON: StartOFF: Reset

SSR drive output

Temperature inputThermocouple

SSRSV-1

SV-2

SV-3SV-4

SV-5

SV-6

SV-7SV-8

Time

Set

val

ue

Digital inputRamp soak operation command


5

• Energy-saving operation is allowed with the setting switched be-

tween 20°C (on standby) and 400°C (during operation) with an

external command switch.

• In a loop that uses an AC power regulator (APR), judgment on

issuance of a heater break alarm cannot be made by a current de-

tector (CT). The controller type PXG detects an error of the loop

based on the operation output and the width of temperature fluc-

tuation.

Control loop error detection10

Energy-saving operation on standby9


PXRDI-1 Sets the operation of DI1.


PXRLBTM Sets a loop break alarm.

Furnace

SSR drive output

Temperature input

Thermocouple

SSR

20°CStandby

400°COperation

Controller

Command switch

DI switching

Controller

Temperature input

Control output4 to 20mA DC

AC power regulator (APR)

Loop error alarm output

Furnace


6

• The operation output (MV) is determined based on external input

until 90% of the concentration setting of an ozone generator is

reached, while the concentration exceeding 90% is controlled with

a controller.

Controlling 90% of the setting at constant control output12


PXR

Note 1: If the output is kept at a constant level, the standby function allows you to perform the same control.

EXM1 Sets the external output value. (Note 1) (Note 1)

Controller

Control output

Concentration signal 4 to 20mA DCExternal analog input

EX-MV

Electricdischarge

Ozone generator

Ozone densitometer

• When washing parts with water kept at constant temperature, once

the washing is completed, the parts are lifted out of the washing

water and then dried for a specified length of time.

The timer function notifies you when the work is completed.

Drying control of washers11


PXRTN-1

Displays the remaining time of timer 1 operation.

Timer signal

Lamp

Temperature input signal

Switch

Heater

Washed object

Washing tank

UpDown

4 to 20mAoutputController

SCR

Buzzer

Washing start

Washing complete


7

• Control can be performed by selecting the highest or lowest tem-

perature detected by three sensors.

Switching between high and low inputs can be made by an exter-

nal event (Di).

Performing control by selecting input signals13


PXROTYP Sets the type of control output selector.

Ai1

PV2

PV1

Di switching(High-Low) switching

Control output

Analog converter

• The calculation function eliminates the need for an external cal-

culation device.

Controlling the flow rate of dry gas14

PXHPXG

Parameter setting by typeDescriptionParameter

PXRK01

K16Sets the constant to be used for calculations.

PV2

Ai1

PXH

ControllerPV1

Differential pressure transmitter

Thermometer

Orifice

Distributor

Distributor

Pressuretransmitter


8

• By assigning operations to user function keys, you do not have to

call up parameters every time a parameter change is required; sim-

ply touch the corresponding key to make the necessary changes.

• Remote/auto switching

• Standby

• Alarm latch clear

• Auto tuning

Switching frequently-used parameters at the touch of a key16


PXR

Note: In case of PXG, only one key is available for this user function

(Note)Assigns operations to user function keys.

User function key

• This setting is useful for stopping the output of a temperature regu-

lator depending on production information.

Use of an external event (Di) also facilitates stopping.

Stopping the output of temperature regulator (Standby setting)15


PXRSTBY Switches between control and standby.

Sensor

Di


9

• The PC loader software supplied as standard makes it easy to up-

load and download parameters on your PC.

• The software is convenient to frequently change the parameters

of a temperature regulator by product. (A dedicated cable is avail-

able as an option.)

Operating the setting of a temperature regulator on your PC

(PC loader software)

17


PXRThe PC loader software facilitates uploading/downloading parameters.

Up to 31 units can be connected.RS485 (MODBUS) communication

Signal converter

RS-232C

• The operation output of the host system is output without ma-

nipulation in the normal state. If the host system goes down, the

regulator backs up the control.

Performing backup control of host control system18


PXREXM1 Sets the external output value.

Temperature sensor

Di

PID

Host system

Back-up

Para

met

er s

ettin

g/ch

ange

scr

een


10

• The PX-series controllers can be used as communication convert-

ers installed at site using their communication function.

• Since sensor signals are converted into communication data at site,

the amount of wiring and labor required can be reduced.

Using sensor signals as communication converters20


PXRSpecifies the type of communication functions.

1F

2F

3F

4F

Animal raising shedController

Temperature sensor

Controller

Temperature sensor

Controller

Temperature sensor

Controller

Temperature sensor

Communication dataRS485(2-wire type: Multidrop)

Guinea pig

RS232C/RS485Converter

• If the output of the controller increases to 100% at the start of

temperature control, the heater or the machine may be damaged

by heat shock. To avoid this, the output can be controlled using

the soft start function.

Decreasing control output at the start of temperature control19


PXRSF01SF02 Sets the control output value for soft start.

Output 100%Temperature sensor

Machine is damaged by heat shock.

Controller

t

Temperature sensor

Controller

t

MV MV


11

• The PX-series controllers can be used as manual operating

devices using transfer output (4 to 20mA DC).

(1) Specify "SV" as the transfer output type and connect trans-

fer output signals to the operation terminal.

(2) The operation output appears at the bottom of the front

panel, and operation can be made using the keys

at any time.

Using a temperature controller as an operating device21



Transfer output (4 to 20mA)

Temperature sensor

Control output not used

Up/down of operation output

Measurement

Operation output value

SV

PV


12

Heater

Temperature input

Fryer

Oil AC power regulator (APR)

4-20mA output

Alarm output

PVALn

ALnPV

ALn PV

ALnPV

ALn

SV PV

ALn

SVPV

ALn

SV PV

ALn

SVPV

PVAL2 AL1

PV

AL1

SVAL2

PV

AL2

SV AL1

PV

AL2 AL1

SV

PVALn ALn

SV

ALn ALn

SVPV

ALn ALn

SVPV

Alarm typeUpper limit absolute

Lower limit absolute

Upper limit deviation

Lower limit deviation

Operation chart

Abs

olut

e va

lue

alar

mR

ange

ala

rmD

evia

tion

alar

m

Upper limit absolute (with hold)

Lower limit absolute (with hold)

Lower limit deviation (with hold)

Upper/lower limit deviation (with hold)

Upper/lower limit deviation

Upper limit deviation (with hold)

Range upper/lower limit deviation(Independent ALM1/2 operations)

Range upper/lower limit absolute

Range upper/lower limit deviation

Range upper limit absolute lower limit deviation

Range upper limit deviation lower limit absolute

II. Parameter Functions

The temperature may fall within the alarm range from

the beginning, such as when temperature control is

started. In such cases, an alarm is issued at first un-

der normal alarm operations. To avoid this, "with

hold" can be selected. Then, after the power is turned

on or the control is started, whether the temperature

is outside the alarm range is checked, and then alarm

detection is started.

Alarm hold2

Alarm1


PXRAL1AL2 Sets the alarm type and the alarm settings.


PXRAL1AL2 Sets "with hold" for alarm type.

Lower limit alarm (AL)

Alarm output ON

OFF

Temperature measurement

An alarm is output with measurements (temperature signals) com-

pared with the value specified beforehand.

Various alarm operations can be selected according to applications.

(1) Absolute value alarmAn alarm is issued when the measurement reaches the alarm setvalue irrespective of the setting (SV) of the temperature regulator.

(2) Deviation alarmAn alarm is issued based on the deviation from the setting (SV)of the temperature regulator.

(3) Range alarmAn alarm is issued when the temperature is kept between alarmsettings.


13

Once temperature measurement departs from

the alarm range, the alarm output is set to

OFF. To prevent this from occurring, the

alarm latch function holds the output to ON

even when the measurement does not fall

within the alarm range. After checking the

alarm, the operator can reset the alarm latch

using one of the following methods:

• Turning on the power of the temperature

regulator again

• Setting the alarm latch parameter to OFF

• Resetting the alarm latch on the alarm

latch reset screen

• Resetting the alarm latch using Di input

• Resetting the alarm latch using commu-

nication

Two-position control (ON-OFF control) can be used

to perform simple temperature control.

When the measurement is smaller than the SV setting

→ The output is set to ON.

When the measurement is larger than the SV setting

→ The output is set to OFF.

The heater is kept on until the set temperature is

reached. Once the setting is reached, the switch is turned

off. The switch is turned on again when the tempera-

ture decreases to a certain level.

Set the proportional band to 0.0 to use the two-posi-

tion control (ON-OFF control).

Two-position control (ON-OFF control)4

Alarm latch3


PXRSets the alarm latch function to latch alarms.


PXRPHYS

Set the proportional band (P) to 0.9 to perform ON-OFF control (two-position control).

Upper limit alarm (AL)

Alarm output ON

OFF

Temperature measurement

Output is kept ON even when the measurement is outside the alarm range.

Temperature

Setting

ON

OFF

Output Time

Heater OFF Heater OFF

Heater ON Heater ON


14

• Although two-position control (ON-OFF control) is convenient for

simple temperature control, the control results may fluctuate.

• To improve controllability and eliminate fluctuations, use PID con-

trol. Note that overshoot is generated when the temperature increases.

• Use fuzzy control to prevent overshoot.

To perform PID control for improving controllability, optimum PID

parameters should be selected. Auto tuning and self tuning func-

tions can be used to find the optimum PID parameters.

Features and notes on auto tuning

• PID parameters optimum to the process can be found.

• Since ON-OFF operation is performed while auto tuning is in

progress, the PV may fluctuate significantly depending on the pro-

cess. Do not use the auto tuning function for a process in which

significant PV fluctuations are not allowed.

• It may take several minutes to several hours to find the optimum

PID parameters (the time required depends on the process).

Features and notes on self tuning

• Specify self tuning, and PID parameters can be automatically found

during control.

• The result of control with PID parameters determined automati-

cally by self tuning is slightly worse than the result with PID pa-

rameters determined by auto tuning.

Auto tuning and self tuning6

PID, fuzzy control5


PXRCTrL Selects a control method.

Note: Not provided with fuzzy control.

(Note)


PXRATSELF

Finds optimum PID parameters by auto tuning or self tuning.

Temperature

Setting

Time

Fluctuates.

Two-position control (ON-OFF control)Temperature

Setting

Time

Does not fluctuate.

Overshoots.

PID control

Temperature

Setting

Time

Fuzzy control

Use auto tuning to find optimum parameters, but it will take a little longer to obtain the results.

A T

Select SELF, and the parameters can be automatically found. It's simple, but the controllability is slightly worse than with auto tuning.

C T r I

S E L F


15

When manufacturing various products with only one machine, opti-

mum PID parameters may vary depending on the products to be

manufactured. In such cases, use the PID switching function. This

function allows you to use sets of PID parameters specified before-

hand, which can then be switched using the keys on the front panel

or using Di.

It's convenient in the following cases:

• Performing control with optimum parameters for each SV when

the machine is used with SV switched

• Performing control with optimum parameters for each product

when controllability varies depending on the item to be manufac-

tured

• Performing control with optimum parameters when characteris-

tics of the operation unit differ depending on the process to be

controlled, such as heating and cooling processes

In some cases such as incineration control, MV should not

be decreased to less than a certain level. Use ML (limit) of

MV limit in such cases to prevent MV from decreasing to

less than ML.

MV limit8

Switching PID7


PXRSets the palette PID.


PXRMH, ML Sets the limit value of operation output (MV).

PID controlPV

SVMV

P parameter

I parameter

D parameter

Front keyorDi

PID switching function

Output

MV

Controller

Temperaturesensor

Combustionfurnace

PV

MV

At least 5% should be opened to prevent fire from being extinguished.

ML

Output

MV95 100%5

The value 5% or smaller is regarded as 0%.

The value 95% or higher is regarded as 100%.

Controller

Solenoid valve

When solenoid valves are used, setting may be necessary to

disable reaction when the MV value becomes less than a cer-

tain level. Use MV limit MH and ML (scale off) in such cases.


16

You may not want to set the temperature exceeding a certain

level.

hIn such cases, you can use SV lower limiter setting and SV up-

per limiter setting to control the range in which SV can be set.

Although a temperature regulator has many parameters, relatively

few parameters are used in most actual applications.

hUse the display mask function to mask the parameters that are not to

be used.

Advantages

• Operation is easier because only those parameters to be changed

are displayed.

• Prevents parameters from being modified by mistake.

Parameter mask10

SV limiter9


PXRSV-LSV-H

Sets the upper and lower limiter settings to determine the range in which SV can be set.


PXRdSP Sets display/nondisplay of each parameter.

MV

PV Machine

Who made this setting? The materials are smoldering!

Controller

MV

PV Machine

It's safe because setting can be made only within the specified temperature range.

Controller

It's confusing because there are so many parameters.

It's easy because only the parameters we need are displayed.

SV setting is allowed only within the set range.

SV-H

SV-L


17

When PV does not reach SV during ramp soak operation, the progress

of SV can be made to be on standby.

Select a motor-operated valve control type from "with" and "without" posi-

tion feedback when using a motor-operated valve.

Select a desired size from our broad lineup, from 48mm to 96mm .

Motor-operated valve control12

Guarantee soak11

PXHPXG


PXRGSOKGS-LGS-H

Sets ON/OFF, upper limit, and lower limit of guarantee soak.


PXR

Note: Position feedback is not allowed with the 48×48mm type.

Sets the type of motor-operated valve control. (Note)

Measurement

Time is stopped during this period.

Set time of segment

Guarantee soak

Upper limit settingGuarantee soak

Settin

g

Setting

Lower limit setting

Set p

atte

rnPa

ttern

to b

e ac

tual

ly

exec

uted

M

M

Controller(1) With position feedback

Valve

ope

ning

sig

nal

(res

ista

nce)

Val

ve o

pen/

clos

e co

mm

and

Val

ve o

pen/

clos

e co

mm

and

FurnaceMotor-operated valve

Controller(2) Without position feedback

FurnaceMotor-operated valve

With position feedback

Advantage DisadvantageThe motor-operated valve requires a feedback resistor.→ Increased cost, and

troubles could occur due to a faulty feedback resistor

• Since the actual valve opening is read, a motor-operated valve with characteristic distortion does not pose major problems.The motor-operated valve requires a feedback resistor.

Without position feedback

Not suitable for motor-operated valves with significant valve characteristic distortion because the actual valve opening is not used for control calculation.

• The motor-operated valve does not require a feedback resistor.

→ Decreased cost, and troubles due to a faulty feedback resistor are avoided

• Lower opening frequency of the motor-operated valve

• Decreased cost of controller


18

A break of a sensor disables the function of the controller. ON (100%)

or OFF (0%) can be selected as the control output of the controller

in such cases.

Even when a temperature regulator is operating with a recorder at

the same place, the PV value displayed on each device may not co-

incide due to a sensor error, etc.

In such cases, the difference of PV values (measurements) can be

corrected.

Note: Control is performed with the PV value displayed (PV mea-

surement with PV shift value added).

User adjustment and PV shift14

Control operation and burnout direction13


PXRP-n1

Sets the control operation and the burnout direction.


PXRPVOFADJO

Sets PV (measurement) shift and user adjustment value.

Ele

ctric

furn

ace

HeaterMG

Break of the sensor

What temperature (°C) is it now?

Example 1: Heater is set to OFF to avoid danger Output lower limit

Example 2: Heater is set to ON to avoid temperature decreaseOutput upper limit

Furnace

Controller

Recorder

Why do the PV values differ even

though measurements are taken at the

same place?


19

More accurate results can be obtained more quickly if PID tuning is

performed while PV trend is checked.

Check the trend of measurement (PV), setting (SV), and the opera-

tion output (MV) on the "PID tuning status screen" of the loader to

facilitate PID setting.

The input specifications of the controllers used at various sites vary

greatly. Keep a universal input type controller to cope with emer-

gencies.

Type PXH is even more convenient because the output specifica-

tions can be switched between contact output and current output.

Universal input16

PID tuning status check (loader)15

PXHPXG


PXRUse the supplied PC loader software to view the PID tuning status on your PC.


PXRSpecify PXG or PXH.

Controller

PXH

Controller

PXH

100…110…120°C

PID

PV

MV

Heater

MGSW

Furnace

K thermocouple

4 to 20mA DC

4 to 20mA DC

Pressuregauge

INV

Spare shelf

Failure

PID

tuni

ng s

tatu

s sc

reen


20

Air conditioning control is performed in forward operation in sum-

mer and in reverse operation in winter. The operations can be switched

with digital input.

Switching between forward and reverse operations17


PXRDI-1 Sets the function to DI-1.

Input signal

Cool water

Warm water

Summer WinterD1

Controller

Air conditioner


(Memo)


(Memo)


Front panel dimensions

Input signal

Output signal

Control method

Function

Communication

96 × 96mm

48 × 96mm

48 × 48mm

24 × 48mm

Measurement input

Remote input

Heater current detection input

Valve opening input

Digital input

Control output

Transfer output

Alarm/event output

ON-OFF control

PID control

Remote control

Control output tracking (EX-MV)

Motor-operated valve control

Heating/cooling control

Auto tuning PID

Fuzzy control

Self tuning

Ramp soak function

Number of PID combinations

SV switching

Manual operation

Key for user assignment

RS485 (MODBUS)

T-LINK

8 points

8 points

3 keys

(500Kbps)

(Note 1)

(Universal) (Universal)

16 steps

8 points

8 points

1 key

72 × 72mm

8 steps (Option)

Up to 4 points (Option)

Type PXH PXG PXR

Relay contact outputSSR/SSC drive outputCurrent outputMotor-operated valve operation output

Relay contact outputSSR/SSC drive outputVoltage outputCurrent output (Note 3)Motor-operated valve operation output (Note 4)

Relay contact outputSSR/SSC drive outputCurrent output (Note 3)

4-20mA DC: 2 points(With transmitter power supply: 1 point)

4-20mA DC or 0-10V DC: 1 pointSelection not allowed for motor-operated valve output and dual output.

Optionaldevice(Note 2)

Optionaldevice

4-20mA DC: 1 point(Selection not allowed for dual output.)

Up to 9 points Up to 5 points (PXG5/9)Up to 3 points (PXG4) (Note 5)

Up to 3 points (PXR5/9)Up to 3 points (PXR4/7) (Note 6)

Up to 9 points Up to 5 points (PXG5/9)Up to 3 points (PXG4)

Up to 2 points

Number of displayed digits

Input accuracy

Calculation intervals

5 digits

0.1%

50mS

4 digits

0.3%

200mS (Note 7)

4 digits

0.5%

500mS

Note 1: Options that can be selected for the panel size 48 × 48mm are limited compared to the panels of other dimensions.Note 2: The valve opening input can be selected only when motor-operated valve operation output is selected as the control output. The heater current

detection input can be selected when relay contact output or SSR/SSC drive output is selected as the control output. "Without DO" cannot be selected. The maximum number of digital input points varies depending on the combination with other optional functions.

Note 3: If current output is selected, heater current detection input or transfer output cannot be selected.Note 4: If motor-operated valve operation output is selected, heater current detection input cannot be selected.Note 5: Up to 2 points for the type with heating/cooling control, motor-operated valve operation output (PXG), heater break alarm function, or transfer output

function.Note 6: Up to 2 points for the type with heating/cooling control, heater break alarm function, or transfer output function. The ambient temperature should be

40°C or lower.Note 7: Position feedback type: 300ms.

(19.2Kbps)(38.4Kbps) (9.6Kbps)

(Select either one.)

(PXG5/9 only)

Digital Controller Function List

ECNO:1158a

PX-series digital temperature controller

Example of Applications and Parameter Functions

Printed in Japan 2011-4/20FOLS

International Sales Div.Sales GroupGate City Ohsaki, East Tower, 11-2, Osaki 1-chome,Shinagawa-ku, Tokyo 141-0032, Japanhttp://www.fujielectric.comPhone: 81-3-5435-7280, 7281 Fax: 81-3-5435-7425http://www.fujielectric.com/products/instruments/

Information in this catalog is subject to change without notice.

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PX-series digital temperature controller Example of ... · PX-series digital temperature controller Example of Applications and Parameter Functions. Front panel dimensions Input signal